Yes, it should. You will have to compile your program at
both clusters first. If your application opens files (for
input or output) then when each of your app's process does
so it will be done on the local file system, which may require
you to also move or copy input files before execution.
The safe thing to do is to assume that the only thing your
running processes can "see" of each other are the messages
that that send to each other.
Nick
On Nov 30, 2008, at 11:34 PM, Le Trung Kien wrote:
Hi,
I have a question that, if I have a program which is a parallel
program and work
properly in cluster with NFS sharing disk between computing nodes.
But I don't
know if it could work on two clusters (as two grids) with different
NFS sharing disks ?
On Thu, Nov 13, 2008 at 12:40 AM, Nicholas Karonis <[EMAIL PROTECTED]>
wrote:
mpich-g2 is far more battle-tested. MPIg is a complete re-write
with performance enhancements, especially when running on compute
nodes where there is more than one CPU.
my advice would be to start with MPICH-G2 and migrate to MPIg
as you need more performance.
nick
On Nov 12, 2008, at 9:19 AM, Yann JOBIC wrote:
Hello,
Thanks for the fast answer !
So i have to choose between MPICH-G2 ans MPIg.
Which one is the most relevant to use ?
It seems that MPIg works with the last WS-GRAM of GT4. Is it better
to use this one ?
Many thanks,
Yann
Nicholas Karonis wrote:
Dear Yann,
Yes, it is possible to do that. Both MPICH-G2 and MPIg are MPI
libraries designed to do precisely that - including automatically
automatically converting data in messages sent between clusters
with different architectures.
You can learn more about MPICH-G2 at www.niu.edu/mpi .
MPICH-G2 works only with pre-web services GRAM from the Globus Toolkit
(i.e., GT2).
You can learn more about MPIg (MPICH-G2's successor) via
anonymous ftp:
The tarballs and instructions to build are all available on
NIU's anon ftp server ftp.cs.niu.edu: pub/karonis/MPIg.
There you can find mpig-1.0.6p1.1.tar.{bz2,gz} (same source,
compressed differently) and index.html (build instructions).
MPIg works with the same pre-web services GRAM that MPICH-G2
does and it also works with WS-GRAM found in GT4.
Nick
On Nov 12, 2008, at 6:18 AM, Yann JOBIC wrote:
Hello,
I would like to know if, with globus, i can run a parallel program
over 2 clusters (running gridengine) at the same time, with mpich
communications between the 2 clusters (and if the architecture is
different too).
I made a figure which expose what i want to do. Cluster A and
Cluster B may have different architectures.
Thanks,
Yann
--
___________________________
Yann JOBIC
HPC engineer
Polytech Marseille DME
IUSTI-CNRS UMR 6595
Technopôle de Château Gombert
5 rue Enrico Fermi
13453 Marseille cedex 13
Tel : (33) 4 91 10 69 39
ou (33) 4 91 10 69 43
Fax : (33) 4 91 10 69 69
--
Le Trung Kien.
